Porpoises communicate with each other using sounds. Therefore, they are highly sensitive to noise, such as ship noise. A new study shows, for the first time, that porpoises flee from and stop feeding when disturbed by heavy ship noise.
Physicists have devised a new method of investigating brain function, opening a new frontier in the diagnoses of neurodegenerative and aging-related diseases. This new noninvasive technique could potentially be used for any diagnosis based on cardiovascular and metabolic-related diseases of the brain. Preliminary results showed evidence of a decline in the coherence between these oscillations in participants over the age of 25, indicating that brain ageing may begin earlier than expected.
Around the clock, cells deep in the brain produces a 'grandfather' form of several hormones that help us regulate our appetite and eating. Now, a new discovery sheds new light on how that grandfather molecule gets produced -- and more important, what can go wrong and raise the risk of overeating and obesity. The findings could pave the way for new approaches to treating forms of obesity, especially those with genetic roots.
New research published in The Journal of Physiology sheds light on the effects of high blood pressure by considering the way the body responds to a lack of oxygen.
Researchers at UFRGS and the US NIH have targeted proteins that regulate chromatin in Ewing sarcoma cells, hindering malignant tumor growth. They induced chromatic relaxation by treating the cells with histone deacetylase inhibitors, reducing expression of the EWSR1-FLI-1 oncogene and other pluripotency/cell viability genes, while impairing sarcoma cell survival and growth. Decreased survival of stem-like cancer cells and re-expression of a neuronal differentiation marker were also observed.
Overfishing and environmental change have pushed abalone species on the US west coast to the edge of extinction. Now a fatal disease threatens their recovery. But new research shows that some abalone species may be less susceptible to the disease than others, providing initial data that could help map where abalone could survive and thrive despite the disease.
Improving how mental health patients perceive themselves could be critical in treating them, according to a study from the University of Waterloo.
Researchers at UNIGE found that socio-economically disadvantaged individuals in childhood are a greater risk of low muscle strength at an older age. Moreover, this risk is not offset by an improvement in their socio-economic status as adults. This means that inequalities in childhood are biologically embodied to literally 'get into the skin'. Why? They suggest that a physiological deregulation caused by stress in childhood might change the body's ability to maintain good health along time.
Plants and microbes engage in a diverse array of symbiotic relationships, but identifying the specific microbes or groups of microbes that contribute to plant health is extremely difficult. In work published on Feb. 20 in the open-access journal PLOS Biology, researchers devised a general experimental scheme to identify and predict which small groups of bacterial species can help plants respond to phosphate starvation, a form of nutritional stress.
Pain is essential for survival. However, it could also slow rehabilitation, or could become a distinct disorder. How strongly we feel it depends on our individual pain threshold. Scientists at the Max Planck Institute for Human Cognitive and Brain Sciences in Leipzig discovered that this threshold can be increased by a new fitness method called Jymmin. It combines working out on gym machines with free musical improvisation -- and makes us less sensitive towards physical discomfort.